Between 1950 and 2015 the productivity of wheat farmers in the United States more than doubled.This means that
A)the amount of land and other resources devoted to wheat production more than doubled.
B)the incomes of wheat farmers more than doubled.
C)the total amount of wheat produced more than doubled.
D)the amount of wheat produced by the average farmer more than doubled.

Question

Quizplus · Accepted Answer

Productivity doubling means that the output per unit of input (such as per farmer) has more than doubled, indicating that the average farmer produces more wheat than before.

Between 1950 and 2015 the Productivity of Wheat Farmers in the United